Universal rolling-mill.



P. I. ELLIS. UNIVERSAL ROLLING HILL.

APPLICATION FILED IAYI, 908.

901,233. Patented Oct. 13,1903.

B SHEETS-SHEET 1.

I. I. ELLIS.

UNIVERSAL ROLLING MILL.

rum-1'10: 21mm lAY 4, 1908.

901,233; Patented Oct. 13,1908.

3 SHEETS-SHEET 2.

WITNESSES INVENTOR I. I. ELLIS. UNIVERSAL ROLLING HILL. APPLIOATIOK rnnn mm, 1900.

I 901,233, I Patc anted Oct. 13,1908. I

8 SHEETS-SHEET 3.

WITNISSE I M M 65mm. mu mirmv lu,

: mechanism for the vertical rolls b FRANK IL ELLIS, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO UNITED ENGINEERING & FOUNDRY COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OF PENNSYL- VANIA.

UNIVERSAL ROLLING-MILL.

and showing the outer side of the horizontal roll housin s; F ig. 2 is a longitudinal side elevation of the mill, partly in section so as to show the vertical rolls and horizontal driving shaft for these rolls; Fig. 3 is a sectional end elevation showing the vertical and horizontal rolls in position s1 the housin s of the mill.

- y invention relates to the t pe ofrolling mills known as universal mi ls, in which both the vertical and horizontal rolls are positively driven and the object of the invention is to provide an improved driving the use of which the difiiculties experience in keeping such mills in operative condition are greatly lessened, the time lost in the operation of the mills is reduced, and the expense of operating such mills is correspondingly lessened.

In universal mills as heretofore constructed, thehorizontal shaft driving the vertical rolls has been mounted in capped bearings located on the top of the housing, the caps being removed in order to permit the horizontal driving shaft to be removed and replaced. In other of such mills the horizontal driving shaft for the vertical rolls has been placed in dead-eye bearings formed in the to part of the housings for the horizontal ro ls. Frequently in the operation of such mills, the horizontal driving shaft for the vertical rolls will become bent or otherwise distorted, or the bevel gears on this shaft will become broken so as to make it necessary to remove and replace such shaft and gears. Where the horizontal driving shaft is mounted in cap bearings on the 'top of the housing, the length of the neck of the vertical roll must be very largely increased over that wherein the horizontal driving shaft is placed in dead-eye bearings forme in the horizontal roll housings. here the horizontal driving shaft is located in dead- Specification of Letters Patent.

Application filed Kay 4, 1908.

Patented Oct. 13, 1908.

Serial No. 430,674.

eye bearings and becomes bent in service, it is extremely difficult to remove the bent shaft from the bearings and it frequently becomes necessary to destroy the shaft by severing it into pieces, in order to remove it from the bearings. Such operations result in great difficultles in removing and replacing a defective shaft and loss of timein the operation of the mill, which results inan enclifmous loss in the earning power of the m1 By means of m improved construction,

the difficulties inci ent to removing thebent shaft from the mill are removed, whilefthelength of the vertical roll is kept down to the? minimum. a

In the drawings, 2 representsthe horizontal roll housings mounted upon the-usual shoes3,3. 4 and 5 are the horizontal rolls, carriedbearings 6 and 7 which are mounted inthe windows of the housings 2. The top IOII'iS- counterbalanced by means of the-counter.-

weights 8 and counter-balancing levers9;

These rolls are provided with the usua'ladjusting screws 10 which are connected by means of slow-down gearing 11 to the screw operating motor 12 which may be of any desired type;

The vertical rolls 13 are mounted in bearings 14, these bearings being mounted upon shoes 15 which are secured between the horizontal roll housin s 2 so as to be adjustable toward and away rom each other in a plane parallel with the vertical axis of the horizontal rolls. The vertical rolls 13 are rovided with the usual bevel gears 16 w ich mesh with similar gears 17 on the horizontal driving shaft 18 by whichthe vertical rolls 13 are actuated. The gears 17 are s lined to the shaft 18 so as'to be longitudinallmovable upon the shaft. The vertical rol s are provided with adjusting screws 19 by which they are adjusted toward 'and away from each other during the operation of the mill.

The horizontal driving shaft 18 by which the vertical rolls are actuated is connected by means of any suitable type of con ling 20 to the driving shaft 21 through whic the shaft 18 is connected to the driving pinions which are actuated by any suitable type of motor. I

The horizontal rolls 4 and 5 are drive'n b means of the customary :spindles "2Q whic are connected to the driving pinions' for the horizontal rolls which in turn are connected to the driving motor.

The top portion of the window in. the housings 2 is recessed and is provided with half-bearings 23 in which is mounted the horizontal drivin shaft 18 for the vertical rolls 13. A suita le cap 24 is provided for each of these hearings in order to retain the driving shaft 18 in place, and preferably, these bearin are kept in osition by means ofa screw olt 25, which extends down: wardly through the top of the housing, its lower end coming into enga ement with'the ca and securely holdin t e cap in place alt liough these caps may ime secured in place in any desired manner. A suitable lock nut 25' is provided for securing the cap holding screw 25 in its adjusted position.

It will be seen that by removing the breaker blocks 27-from their place on top of the horizontal roll bearings and by removing the 80p bearin for the top roll 5 of the horizonta mill wien the caps 24 are removed from the shaft 18, these shafts can be easily and quickly removed and replaced by shiftin them endwise through the Window of the ousing 2. The shaft can be stripped from the spool bevel gears 17 by removin it endwise through the window of the houslng 2, or the gears 17 and shaft 18 may both be removed through this window. This is of particular advantage in cases where the shaft becomes bent in such manner that the removal of the gears 17 is prevented.

The advantages of my invention will be appreciated by those skilled in the art. By

' constructing the window of the horizontal roll housing as shown, so as to secure the horizontal driving shafts for the vertical rolls in half-bearings formed in the top ortion of the window of the housing, t ese shafts can be easily and quickly removed The necessity for long delays for removing bent orotherwise mutilated driving shafts from the mill is removed, while by the simple and compact construction shown, the length of the neck of the vertical rolls is shortened greatly, and the strength of these rolls is ve largely increased.

ariatlons in the construction and ar- .rangement of the parts may be made with-.

out departing from my invention.

I claim 1. A universal mill havin closed top housings provided with win ows for the horizontal rolls, a horizontal drivin shaft for the vertical rolls, and hearings or said driving shaft located in said windows, substantially as described.

2. A universal mill havin r closed top housings provided with win ows for the horizontal rolls, a horizontal driving shaft for the vertical rolls, bearings provided with caps for said shaft and located in said windows, said bearings supported on the under side by a portion of the housing which defines the windows, and means extending downward from each housing into securing engagement with the corresponding cap, the portions of the frame adapted to support the earings constructed and arranged to permit of lateral movement of the horizontal shaft toward the center of the windows when the cap-securing means is in disengaged position, substantially as described.

3. A universal mill having closed top housings provided with windows for the horizontal rolls, horizontal driving shafts for the vertical rolls, and bearings for said shafts, the said windows being extended laterally and verfically to receive said bearings and to permit said shafts to be removed through said windows, substantially as de; scribed.

In testimony whereof, I have hereunto set 

